Illinois (Cook County), Chicago Loop quadrangle / topography by O.H. Nelson ; control by U.S. Geological Survey [and others] ; surveyed in 1926

Chicago citation style
Geological Survey (U.S.). Illinois (Cook County), Chicago Loop quadrangle / topography by O.H. Nelson ; control by U.S. Geological Survey [and others] ; surveyed in 1926. 1929. Retrieved from the Digital Public Library of America, http://collections.lib.uwm.edu/cdm/ref/collection/agdm/id/4590. (Accessed March 29, 2024.)
APA citation style
Geological Survey (U.S.), (1929) Illinois (Cook County), Chicago Loop quadrangle / topography by O.H. Nelson ; control by U.S. Geological Survey [and others] ; surveyed in 1926. Retrieved from the Digital Public Library of America, http://collections.lib.uwm.edu/cdm/ref/collection/agdm/id/4590
MLA citation style
Geological Survey (U.S.). Retrieved from the Digital Public Library of America <http://collections.lib.uwm.edu/cdm/ref/collection/agdm/id/4590>.
Note: These citations are programmatically generated and may be incomplete.